Small very well finished tool and correct measurements once calibrated (I recommend an adjustable power from 0 to 24V), optionally after an update in alternative firmware recently adapted to the 8MByte version of memory (see reference site forum seedstudio.com; Wildcat33, gabonator etc.) Rather suitable for measurements up to 1MHz. If you are looking for accuracy and ergonomics, go your way, but it will cost more ... It is found in France among Amazon sellers cheaply, Eiffel style in one case.